<template>
  <div>
     <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>权限管理</el-breadcrumb-item>
  <el-breadcrumb-item>角色列表</el-breadcrumb-item>
  </el-breadcrumb> 
  <!-- 卡片视图 -->
  <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表 -->
      <el-table :data="rolelist" border stripe>
<el-table-column type='expand'>
    <template slot-scope="scope">
    <pre>
      <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
          <!-- 一级 -->
          <el-col :span="5">
           <el-tag>
                  {{item1.authName}}
               <i class="el-icon-caret-right"></i>
           </el-tag>
          </el-col>
          <!-- 二级、三级 -->
          <el-col :span='19'>
              <el-row :class="['bdbottom', i2 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item2,i2) in item1.children" :key='item2.id'>
             <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">{{item2.authName}}
                          <i class="el-icon-caret-right"></i>
                    </el-tag>
                  
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3, i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row, item3.id)">{{item3.authName}}</el-tag>
                  </el-col>
              </el-row>
          </el-col>
      </el-row>
    </pre>
    </template>
</el-table-column>
      <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
   </el-card>

    <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close='setRightDialogClosed'>
     <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights" >确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
data() {
    return {
        rolelist:[],
           setRightDialogVisible: false,
           rightslist: [],
           treeProps:{
               label:'authName',
               children:'children'
           },
                    defKeys:[],
                     roleId: ''
    }
},
created(){
    this.getRolesList()
},
methods: {
      async getRolesList() {
      const { data: res } = await this.$http.get('roles')

      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolelist = res.data

      console.log(this.rolelist)
    },
  async removeRightById(role, rightId) {
      const confirmResult = await this.$confirm(
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除！')
      }

      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )

      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      role.children = res.data
    },
    async showSetRightDialog(role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')

      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }

      this.rightslist = res.data
      console.log(this.rightslist)
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
     getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
       node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    setRightDialogClosed(){
      this.defKeys=[]
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]

      const idStr = keys.join(',')

      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }

      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style> 